Submarine boat.



G. A. FREDERICKS.

SUBMARINE BOAT. I APPLICATION FILED NIB. 2. I915. 1 ,1 88,436. PatentedJune 27, 1916.-

2 SHEETS-SHEET I.

G. A. FREDERICKS SUBMARINE BOAT;

APPLICATION FILED FEB. 2. 1915.

latvntvd June 27, 1916.

2 SHEETS-SHEET 2.

Jllilrl V jnue-n-for A. Freda/patina "/d /4 Hr.

2/0114 wen 9% GEORGE A. FREDERICKS, OF NEW YORK, N. Y.

. SUIBMARINE BOAT.

To all whom it may concern:

Be it known that I, GEORGE A. FREDER- ICKS, a citizen of the UnitedStates,residing at New York, in the county of New York, State of NewYork, have inventedcertain new and useful Improvements in SubmarineBoats; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will S1ieeification ofLetters Patent.

enable others skilled in the art to which- 'it appertains to make anduse the same.

This invention relates to submarine boats.

The object of the invention resides in the provision of a submarineboa't embodying an improved construction whereby a diver may enter andleave the boat when same is beneath the surface of the water.

' Vith the above and other objects in view the invention consists in thedetails of construction and in the arrangement and combination of partsto be hereinafter more fully described and particularly pointed out inthe appended claim.

In describing the invention in detail-reference will be had to theaccompanying drawings wherein like characters of reference denotecorresponding parts in the several views, and in which Figure 1 is atransverse section through a fragment of a submarine boat embodying theinvention; Fig. 2, a section on the line 22 of Fig. 1; Fig. 3, a sectionon the line 33 of Fig. 1: Fig. 4:, a longitudinal section through afragment of the submarine boat and disclosing certain features essentialto the invention; Fig. 5 a view in elevation of the outer side oftheinner door of the divers room; Fig. 6, a section on the line 66 ofFig. 4; Fig. 7, a section on the line 77 of Fig. 2, and Fig. 8, asection on the line 8-8 of Fig. 7.

Referring to the drawings 10 indicates the body of a submarine boat inone side of which is built a divers room indicated generally at A andincluding a front wall 11, a rear wall 12, side walls 13, a top wall 14,and a bottom wall 15. The rear wall 12 is provided with an opening 16adapted to be closed by a .door 17, the latter being provided with agasket 18 to render same water tight when in closed position. The wall12 is provided adjacent the opening 16 with a threaded recess 19 inwhich is adapted to be engaged a locking screw 20 rotatably mounted onthe door 17 adjacent the free edge of the latter. This locking screw 20is pro- Patented June 2'7, 1916.

Applicatidn filed February 2, 1915. Serial No. 5,769,

vided with a circumscribing flange 21 adapted to bear against the door17 as the screw 20 advances into the recess 19 and thus force the doorinto closed position and compress the gasket 18 to produce a water tightjoint.

The wall 11 is likewise provided with an opening 22 adapted to be closedby a door 23. ThIS door 23 is provided with an arm 24: the free end ofwhich is fixed to a shaft 25 rotatably mounted in bearings 26, saidshaft being disposed above the room A. B0- tatably mounted adjacent theshaft 25 and parallel thereto is a shaft 27 adapted to be rotatedthrough the medium of any suitable source of power located within theboat. It will be noted that the wall of the boat is recessed at 28 toreceive the shaft 25 and expose a portion of the shaft 27 Fixed upon theshaft 25 is a gear 29 which meshes with a gear 30 fixed upon the shaft27 and whereby rotation of the latter will impart opening and closingmovement to the door 23 as will be obvious. Mounted on the inner side ofthe door 23 is a bracket 31 in which is rotatably mounted a lockingscrew 32. This screw is threaded centrally through a lockmg bar 33adapted to travel in guides 34: mounted upon the door 23. Mounted uponthe wall 11 adjacent each side of the opening 22 is a keeper 35 adaptedto receive the ends of the bar 33 when the latter is disposed in lookingposition. In order to lock the door 23 the various parts are disposed inthe position shown in Fig. 2 and the screw 32 rotated so that same willadvance through the bar 33. As the latter'is held against movement bythe keepers 35 it will be apparent that the door 23 will be forced toclosed position with sufficient power to effect the necessary watertight joint. When the doors 17 and 23 are closed water may be suppliedto and removed from the room A through the medium of a pipe 36 connectedthrough the bottom 15 and further connected with a pump 37. Under thesame conditions air is supplied to and removed from the room A throughthe medium of a pipe 38 which may be connected selectively to a pump forsupplying air or to a pump for exhausting air. Air connections for thediver are carried into the room A through the wall 13 and are indicatedat 39, while a telephone connection 40 and an electric light connection41 are carried into the room A through the wall 13. A suitable electriclight 42 is mounted upon the top wall l t is supplied through anelectric conductor -13 leading from the dynamo of the boat.

Assuming the parts to be in their normal position the door 23 will belocked closed and the door 17 unlocked and free to swing The diver canthen enter the room A from the interior of the boat proper through theopening 16. After he has entered the room the door 17 is swung closedand locked. The diver then attaches the air connections 39, telephoneconnections 40 and electric light connections 41 to his paraphernalia.Water is then pumped into the room A and the air simultaneously removed.The diver then unlocks the door 23 andsignals for same to be openedthrough the medium of the mechanical means heretofore described. Withthis condition existing the diver can enter the sea and return to theroom A at his pleasure. When the diver desires to return to the boat theoperation just described is reversed.

What is claimed is In a structure for affording ingress and egress toand from submarine boats beneath the water line, the combination withthe hull in communication with the sea, an operating shaft rotatablymounted on the hull and eX- tending through said space, a pinion on saidoperating shaft disposed Within the space, a second shaft rotatablymounted on the hull parallel to the first shaft, a pinion on the shaftmeshing with the pinion on the first shaft, an arm fixed on. the secondshaft, a door carried by saidarlh and movable to a position to close theopening in the wall by rotation of the first shaft, a locking device onthe interior of said door, a second door included in one of the innerwalls of the room, and a locking device on the inner side of the seconddoor.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

GEORGE A. FREDERICKS. -Witnesses:

THOMAS A.'O,BRIEN, WILLIAM CoNLoN.

